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Substances/ Elements
Term | Definition |
---|---|
Chemical Reaction | a process during which the atoms of starting substants (reactants) rearrange to form a new substance (products) |
Symbol | a combination of capital and lower case letters that stand for an element |
Evidence of a chemical reaction | 1. gas creation 2. temp change 3. creation of a new substance |
Ways to identify a substance | 1. chemical name 2. chemical formula 3. common name |
matter | anything that has mass and takes up space |
Substance | a type of matter defined by a unique particle |
Water | H20 |
Hydrogen | H |
Calcium | Ca |
Sodium | Na |